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What/Where did you fly today? - Part 3

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Re: What/Where did you fly today? - Part 3

Postby V12 » Tue Apr 03, 2018 6:26 pm

Thanks for good message. Some hours ago repo didn't exist.
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Re: What/Where did you fly today? - Part 3

Postby legoboyvdlp » Fri Apr 06, 2018 8:50 pm

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A quick test flight near Hilo

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Re: What/Where did you fly today? - Part 3

Postby Ger272 » Fri Apr 13, 2018 8:39 pm

New EDDB (Berlin-Schönefeld) Scenery:

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A350, A320, A380 and Transall
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Re: What/Where did you fly today? - Part 3

Postby V12 » Mon Apr 16, 2018 6:45 pm

Almost midair crash over JFK :

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Supersonic meeting at KSFO :

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Re: What/Where did you fly today? - Part 3

Postby tdammers » Tue Apr 17, 2018 9:37 am

A little something I'm working on:

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Re: What/Where did you fly today? - Part 3

Postby Thorsten » Tue Apr 17, 2018 9:46 am

Interesting - space becomes more populated... How do you navigate it?
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Re: What/Where did you fly today? - Part 3

Postby tdammers » Tue Apr 17, 2018 11:40 am

Thorsten wrote in Tue Apr 17, 2018 9:46 am:Interesting - space becomes more populated... How do you navigate it?


Currently, badly. The FDM is yasim-based, but I will almost certainly have to rewrite it using JSBSim - yasim is just too limited to model what I need. It's good enough for a few screenshots though. I don't have any proper instruments either, I'm using Phi, the default HUD, and a crude status display in a canvas window to get an idea of what's happening.

Anyway, the idea is that the spacecraft can fly in 3 different modes, all of them aided by the flight computer: VTOL mode (controls work like in a heli, used for takeoffs, landing, and near-ground precision maneuvers), aero mode (controls work like in a supersonic aircraft, used for climbout, atmospheric reentry, and in-atmo cruising), and ballistic mode (used for anything out-of-atmo: second-stage launch burn, orbital maneuvering, deorbiting, early reentry; also interplanetary travel, but that's not going to work anyway). VTOL works fine, ballistic is mostly fine but suffers from gimballing problems in the auto-stabilizing code, aero is currently hopeless.

In terms of instrumentation, I want something that looks consistent with the things we see on screen, while still being practical.
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Re: What/Where did you fly today? - Part 3

Postby Thorsten » Tue Apr 17, 2018 11:47 am

How much thrust do you give this thing? Is it going to be a 'point and thrust away' affair, or does it involve real orbital maneuvering?
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Re: What/Where did you fly today? - Part 3

Postby tdammers » Tue Apr 17, 2018 12:12 pm

I haven't figured out the right thruster power yet, actually. It's clearly a super heavy monster of a spacecraft, and the main engines alone can hover the thing in Earth-like gravity, so they must be pretty powerful, but at the same time I do want to make it such that getting into any particular orbit isn't trivial. So ideally, the engines would be powerful enough to outdo gravity by a fair bit, but you'd still have to juggle orbital parameters to get onto a survivable reentry trajectory. It's going to need a lot of tweaking before I get that right though.
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Re: What/Where did you fly today? - Part 3

Postby Thorsten » Tue Apr 17, 2018 2:29 pm

So ideally, the engines would be powerful enough to outdo gravity by a fair bit, but you'd still have to juggle orbital parameters to get onto a survivable reentry trajectory. It's going to need a lot of tweaking before I get that right though.


It's all in the specific impulse - total DeltaV is more important here than maximum thrust - total DeltaV determines what you can do, maximum thrust only how cleanly you can do it.

Anyway - LEO targeting has all you need to quickly see what you can do with what kind of engine setup - and you may want to follow the progress of the (leaner) Nasal version (orbital_targeting.nas) in the Shuttle repository for your navigation needs - no need to develop the wheel from scratch...
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Re: What/Where did you fly today? - Part 3

Postby tdammers » Tue Apr 17, 2018 3:14 pm

Very nice, thanks, will look into it.
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Re: What/Where did you fly today? - Part 3

Postby swampthing » Wed Apr 18, 2018 5:00 pm

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Last edited by swampthing on Tue Apr 24, 2018 9:27 pm, edited 1 time in total.
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Re: What/Where did you fly today? - Part 3

Postby hardba11 » Thu Apr 19, 2018 8:54 pm

Hello,

some screenshots of my world tour (I reached south africa)

la réunion :
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south africa :
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and I tried the grand canyon loop (http://fguk.eu/index.php/hangar/category/15-ai-scenarios)

going to KGCN :
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KGCN, we can see the beginning of the loop :
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loop finished in 121.80 seconds :
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seeya

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Re: What/Where did you fly today? - Part 3

Postby J Maverick 16 » Sat Apr 21, 2018 11:19 am

Seaside anyone?

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WIP F-16CJ Block 50/52+ overflying the Adriatic coastline.
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Re: What/Where did you fly today? - Part 3

Postby StuartC » Mon Apr 23, 2018 9:55 am

Spec Ops in Columbia. Location Classified.

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